df -P /usr | awk '/\/usr/{ printf $5}' | tr -d "%"

The updating of the user cronjob worked fine so I changed my user crontab with the “DISPLAY=:0.0″ . I am not sure what the extra value is of the /etc/profile.d/run.cron.gui.sh. With or without it my shell script starts and finishes and produces ( as far as I can see ) the same results.

This “DISPLAY=:0.0″ added to the cronjob solved for me other problems that output could not be showed on the display and gui applications could not be executed.

Thank you @petrescs and @vivek for the answers to my questions. They were very helpful.

Jeroen

Vivek : I will try this tomorrow….its getting late here…

Thanks every one,

Jeroen

You need to run it as follows /etc/profile.d/run.cron.gui.sh:

#!/bin/sh
# replace vivek with actual username, see xhost man page ;)
/usr/bin/xhost +si:localuser:vivek

Set permissions:

chmod +x /etc/profile.d/run.cron.gui.sh

Finally update your cronjob:

36 19 * * *  DISPLAY=:0.0 /home/paula/shells/check_partitions_sizes.sh

OR assuming that you are always on 0.0

36 19 * * *  DISPLAY=:0.0 && /home/paula/shells/check_partitions_sizes.sh

HTH

echo “${output[11]/\%/}”

I used also the method of relabelling with mlabel and this works great and much faster then with gparted. I added an entry in the crontab but when this job runs it cannot display the warnings. I get this in the mail :
(zenity:21175): Gtk-WARNING **: cannot open display:
/media/FREECOM_HDD932

Is this something from Fedora 8 with crontab ??

This was my entry :
36 19 * * * /home/paula/shells/check_partitions_sizes.sh

Regards,

Jeroen

Yes this is great. I was banging my head on this because I relabelled an usb disk before. But then there was no data on it so I put a fat filesystem on it with the correct label. This usb drive has lots of data on it so I am a little bit more carefull with it. I did not know Gnome was able to do this but I am just checking this out with gParted and I it did the job oke.

Thanks, great call,

Jeroen

Thanks for the quick response on my email. Yes this mount point is automatically made for the usb drive under Fedora 8 at rebooting time. I suppose the usb drive is FAT32 formatted and given as label this name. I will find a way to give the usb drive a correct name without the spaces. Then it will be mounted correctly at startup. I suppose another way is to mount this usb drive manually under /media/freecomhdd for example.

Thanks,

Jeroen

FSfreecomhdd="/media/FREECOM HDD"

HDD is not a valid mount point, use full path like /usr /home /www

FSfreecomhdd="/media/FREECOM / /home /www"

Now when I change this to the following ( note the space between the “M” and the “H” in “/media/FREECOM HDD”:

#!/bin/bash
# Tested Under FreeBSD and OS X
# File systems ( partitions )
FSfreecomhdd="/media/FREECOM HDD"
# Everything above 85 will be given a yellow card for warning
THRESHOLD=85
# Check given file systems for size
for FS in $FSfreecomhdd ; do
	echo $FS
	OUTPUT=($(LC_ALL=C df -P $FS))
	CURRENT=$(echo ${OUTPUT[11]} | sed 's/%//')
	[ $CURRENT -gt $THRESHOLD ] && /usr/bin/zenity  --warning  --text="The disk ${OUTPUT[12]} ($CURRENT% used) is almost full. Delete some files." --title="df Warning"
done

it does not work anymore.

Output will be :
df: `/media/FREECOM’: No such file or directory
df: no file systems processed
./check_partitions_sizes_simple.sh: line 15: [: -gt: unary operator expected
df: `HDD’: No such file or directory
df: no file systems processed
./check_partitions_sizes_simple.sh: line 15: [: -gt: unary operator expected

With or without the escape character like FSfreecomhdd=”/media/FREECOM\ HDD” does not mather.

The “df – P” will treat it as 2 strings which is obviously not my purpose.

Is there another way to escape the space so that df will accept and treat this as 1 string in stead of 2 ??

Thanks in advance,

Jeroen

p.s. great website for shell programming and linux things !!!

S.ficheros Bloques de 1024 Usado Libre Ocupado Montado en

/dev/sda4 12399800 9341132 2433740 80% /

# df -P /usr | grep /usr | awk ‘{ print $5}’ | sed ‘s/%//g’
no answer…, and I was waiting for an output: 80
What is wrong with that?

Thanks in advance, I’m learning from you how to make scripts.

I was unaware of zenity. Very sweet.

Jaysunn

The FAQ has been updated.